Transfer web



Jan.29, 1929. I 1,700,415

S. A. NEIDICH TRANSFER WEB Filed May 16, 1927 Patented Jan. 29, 1929."

UNITED :STATES PATENT. OFFICE.

TRANSFER WEB.

Application, filed May 16, 1927. Serial No. 191,837.. 7

My invention niav be advantageously employed in the manufacture of ink ribbons for typewriting machines, but is not restricted to such use. Such webs are formed of thin textile fabric and are rendered useless b rupture of said fabric by type impacts, efore the traasfel'ink is exhausted thei'efrom.

It is the object andefi'ect of my invention to render such transfer webs more durable 1 than heretofore, so as to lessen the cost thereof for a given number of transfer imprints therefrom: Moreover, the destructive wear upon ordinaryrink ribbons detaches particles 0 the textile fabric, which particles lodge in the interstices of the type, interfering with clarity of impressions therefrom and necessitating cleaning the type at frequent intervals. Therefore, a further advantage of my invention is that the fabric is prevented from thus disintegrating; so that it is unnecessary to clean the type to remove fragments of the fabric therefrom.

The .essential feature of m invention .is the protection of one face of t ie fabric, by a shield, which may be a coating, film or sheet of material, applied to the face of the textilefabric opposite to that from which the impressionis to be transferred, rendering the fabric more resistant to the stresses incident to the impact of type thereonthan if unprotected.

In the form of my invention hereinafter described; the shield. web is a primarily plane, coagulated, gelatinous, amorphous,

silfilm of artificial cellulose, such as may be produced by coagulating or precipitating viscose, (liquid cellulose sulpho-carbonate or thio-carbonate) or other suitable cellulose 4 solution; for instance, nitro-cellulose; or cellulose dissolved in ammoniac'al copper oxide; or in zinc chloride; or acetic anhydride, etc.

My invention includes the various novel features of construction, arrangement and 1 procedure hereinafter ,inore definitely speci- 45. fied.

In said drawings; Fig; I is a fragmentary perspectiveview, of an ink ribbon for a type- -writer, provided with a shield member which is cemented upon one face thereof.

Fig. II is fragmentary perspective view of a sheet of inked transfer web provided with a shield web cemented upon one face thereof and adapted to be cut into strips to form ink ribbons. Fig. III is a fragmentary perspective view of a blank web of fabric adapted to be sub:

sequently inked and having a shield web attached to one face thereof.

Referring to the form of my invention shown in Fig. I; a completely formed ink ribbon is indicated at 1. As ordinarily manufactured, such a ribbon is formed of a strip of fine count cotton muslin of the grade known to the trade as longcloth, with its longitudinal cut edges glued at 2, to prevent unraveling oft-he otherwise loose threads of the fabric. One surface of said ink ribbon 1 is coated with cement 4 to secure the'shield web 5 to said fabric 1. Said shield 5v is preferably a film of artificial cellulose, for instance,

what isknown tothe trade as cellophane, and

need not'be more than .0005 of an inch thick.

A suitable cement 4 to connect such shield web 5 with the inked cotton textile fabric 1 may be composed of the following ingredients: 2 parts gum pontianac, 1 part acetone, 1 part alcohol, 1 part castor oil.

However, the-operation of gluing the edges manufactured as indicated in Fig. II; wherein the inked textile fabric 7, say nine inches ,of each ribbon as indicated at 2 in Fig. I may be, saved and omitted if thetransfer web is wide, is coated with suitable cement 8 to secure the shield web 9 thereon and, thereafter,

the double fabric may be slit as indicated by the dotted lines 11 to form separate ink rib--.

bons 12, the edges of, which are prevented from'unraveling by saidcoating of cement 8.

' In the form of'mv invention indicated in Fig. III; anuninked textile fabric 14: is provided with the shield 15 -which-may be'a separatelyiformed film or sheet as in Figs. I and II, or may be formed by depositing a liquid .solution'of cellulose, as aforesaid, upon said.

fabric 14. The textile fabric 14, thus reinforced by the shield 15, thereafter may be coated or otherwise impregnated with ink 16, applied uponits face opposite to that cov ered the shield.

Thefiect of any of the procedures above contemplated is' to provide a sheet carryingtransfer material upon one face thereofwith a shield film. of artificial cellulose upon the opposite face thereof and in intimate coherent connection therewith; said shield niaterial being impervious to theoily and other ingredientsof the transfer material. The fact that myi'mproved'shield is of amorphous character, i. e., without crystalline, fibrous, or cellular structure, permits the transfer of impressions through it without modifying thetransferred imprints by the texture of the impressions made therethrough, because of lts texture. Moreover, 1t 15 to be particularly noted that any varnish would. be softened and rendered sticky by absorption of the oily ingredients of the transfer material and would, consequently, stick to the type faces andv consequently interfere with the operation of typing and incidentally clog the type faces. Of course, there is no paper which is impervious to the oily constituents of the transfer .material and my improved shield -is distinguished from any kind of paper in that respect.

Therefore, I do not desire to limit myself'to the precisedetails ofconstruction, arrangement or procedure herein set forth, as it is obviousthat Various modifications may be made therein without departing from the essential features of my invention, as defined in the appended claims.

1 claim:

1. The combination with a web of textile fabric, of uniform texture from edge to edge thereof of transfer material upon one face of said fabric; and amorphous artificial cellulose material, upon the opposite face of said fabric, permanently connected therewith throughout the coextensive areas thereof, and 1 forming a shield impervious to any portion of said transfer material.

2. A transfer fabric as in claim 1, wherein the transfer material impregnates the textile fabric from face to face thereof.

3. A transfer fabric as in claim 1, wherein the means holding the shield material in connection with the textile fabric serves to bind the edges of the textile fabric and-prevent raveling thereof.

4. A transfer fabric as in claim 1, wherein the shield material is connected with the textile fabric by a cement binding material distinct from said shield material and arranged to prevent raveling of the edges of the textile fabric.

5. A transfer fabric as in claim 1, wherein the means connecting the shield material with the textile fabric is a residue of a solution of gum pontianac in acetone, alcohol, and castor oil, and is arranged to prevent raveling of the edges of the textile fabric.

6. A transfer fabric as'in claim 1, wherein the textile fabric is impregnated with typewriter ink including the transfer material and the shield material isimpervious to all of the ingredients of said ink and is capable of resisting the wear of type impacts to a greater degree than said textile fabric.

In testimony whereof, I have hereunto signed my name at Burlington, New Jersey; this 4th day of May, 1927.

" SAMUEL A. NEIDICH. 

